Current Electricity

CBSE Class 12 · Physics · 23 past questions

6 of 23 · show all

1. Q15 2023

   A current of 0.8 A flows in a conductor of 40 Ω for 1 minute. The heat produced in the conductor will be

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2. Q16 2023

   A cell of emf E is connected across an external resistance R. When current 'I' is drawn from the cell, the…

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3. Q17 2023

   The current density due to drift of electrons in a conductor is given by : (symbols have their usual meanings)

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4. Q18 2023

   Questions number 16 to 18 are Assertion (A) and Reason (R) type questions. Two statements are given — one…

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5. Q20 2023

   For a metallic conductor, the correct representation of variation of resistance R with temperature T is… (with a figure)

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6. Q21 2023

   The potential difference across a cell in an open circuit is 8 V. It falls to 4 V when a current of 4 A is…

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